File Fix-build-error.patch of Package corosync

Author: Fabio M. Di Nitto <fdinitto@redhat.com>
Date:   Sun Oct 23 08:23:52 2016 +0200

    [build] Fix build on RHEL7.3 latest
    
    header inclusion have changed
    
    Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>

diff --git a/lib/sam.c b/lib/sam.c
index 1596ae2..33aa394 100644
--- a/lib/sam.c
+++ b/lib/sam.c
@@ -46,6 +46,7 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <errno.h>
+#include <poll.h>
 
 #include <corosync/corotypes.h>
 #include <qb/qbipcc.h>